Pendugaan Biomassa Ikan Pelagis Di Perairan Teluk Tomini Dengan Metode Akustik Bim Terbagi

Natsir, Mohammad; Sadhotomo, Bambang; Wudianto, Wudianto

doi:10.15578/jppi.11.6.2005.101-107

Cited by 10 publications

(11 citation statements)

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“…Conversions strength target value into a length (L) for pelagic fish used equation TS = 20 log L-73.97 [14]. Relations targets strength and OBS (backscattering cross-section, m 2 ) is calculated based in [6] with equation: Where:…”

Section: Fisheries and Oceanography Open Access Journalmentioning

confidence: 99%

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Acoustic Systems (Split Beam Echo Sounder) to Determine Abundance of Fish in Marine Fisheries

Lubis¹

2017

OFOAJ

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Acoustic waves are transmitted into the subsurface ocean will experience (scattering) caused by marine organisms, material distributed in the ocean, the structure is not homogeneous in seawater, as well as reflections from the surface and the seabed. Estimation of fish stocks in the waters wide as in Indonesia have a lot of them are using the acoustic method. Acoustic method has high speed in predicting the size of fish stocks so as to allow acquiring data in real time, accurate and high speed so as to contribute fairly high for the provision of data and information of fishery resources. Split beam echo sounder comprises two aspects, and a transducer. First aspect is the high-resolution color display for displaying echogram at some observations and also serves as a controller in the operation of the echo sounder. The second aspect is tranciever consisting of transmitter and receiver. Echosunder divided bim first inserted into the ES 3800 by SIMRAD beginning of the 1980s and in 1985 was introduced to fishermen in Japan as a tool for catching up. Split beam transducer is divided into four quadrants. Factors that contribute affect the value of Target Strength (TS) fish Strength targer can generally be influenced by three factors: a target factor itself, environmental factors, and factors acoustic instrument. Factors include the size of the target, the anatomy of fish, swim bladder, the behavior of orientation.

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Section: Fisheries and Oceanography Open Access Journalmentioning

confidence: 99%

“…Conversions strength target value into a length (L) for pelagic fish used equation: TS = 20 log L-73.97 [14]. According in [15], the relationship length (L) and weight (W) of a species of fish that is: (Figure 9) [20]).…”

Section: Fisheries and Oceanography Open Access Journalmentioning

confidence: 99%

Acoustic Systems (Split Beam Echo Sounder) to Determine Abundance of Fish in Marine Fisheries

Lubis¹

2017

OFOAJ

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“…In additio (Natsir et al, 2005) has a long -weighs equation to convert length into weight as follows:…”

Section: Data Collectionmentioning

confidence: 99%

Fish stock estimation in Sikka Regency Waters, Indonesia using Single Beam Echosounder (CruzPro fish finder PcFF-80) with hydroacoustic survey method

Lubis¹,

Anurogo²

2016

Aceh J. Anim. Sci.

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Sikka regency waters including fishery management with a high utilization status so that the necessary stages of an intensive monitoring and research potential of fish resources. This study aimed to obtain the estimated value of stock biomass and density of fish resources with the acoustic method. Quantitative data obtained will be a source of current information on the state of fish resources in the Sikka regency waters, Indonesia. The research was conducted in May 2015. Acoustic data retrieval, using instruments CruzPro fish finder PcFF-80 with sound velocity of 1516 m / s, power 2560 Watt, and method in survey acoustic use hydroacoustic long transect. The horizontal distribution shows a fluctuation striking at research location has the highest salinity levels in the range of 29.3-29.8 psu. Total biomass of fish in this study showed more the number is at a depth of 11-20 m that is 2,008 tons/km and at a depth of 1-10 m have the total fish biomass is 12.33 tons/km, single detection is done using a single target hydroacoustic show more dominance at a depth of 11-20 m in Sikka regency waters, MTB, Indonesia in May 2015. Number of data from results obtained by looking at the relationship between the number of the data with the total biomass in 1-10 m depth has equation Y = 0.0967x + 0.0486 with R2 is 0.0464 (4%) , while at a depth of 11-20 m has a regression equation is Y = 0.0003x + 0041 with the R 2 is 0.0091 (0.9%). Variations in the data or the detection of single targets have variations over the data that is at a depth of 11-20 m with the lowest regression is 0.9%.

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“…Where : A = the value of the target strength to 1 cm long fish (normalized target of strength) Conversions strength target value into a length (L) for pelagic fish used equation: TS = 20 log L-73.97 (Natsir et al, 2005) . According in (Effendie, 2001) the relationship length (L) and weight (W) of a species of fish that is: W=aL…”

Section: Introductionmentioning

confidence: 99%

“…In addition (Natsir et al, 2005) has a long and weighs equation to convert length into weight alleged allegations are as follows: Factors that contribute affect the value of target Strength (TS) fish Strength target can generally be influenced by three factors: a target factor itself, environmental factors, and factors acoustic instrument. Factors include the size of the target, the anatomy of fish, swim bladder, the behavior of orientation (Priatna.…”

Section: Introductionmentioning

confidence: 99%

Acoustic systems (split beam echo sounder ) to determine abundance of fish in marine fisheries

Lubis

Manik

2017

J. Geoscience Eng. Environ. Technol.

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Acoustic waves are transmitted into the subsurface ocean will experience scattering (scattering) caused by marine organisms, material distributed in the ocean, the structure is not homogeneous in seawater, as well as reflections from the surface and the seabed. Estimation of fish stocks in the waters wide as in Indonesia have a lot of them are using the acoustic method. The acoustic method has high speed in predicting the size of fish stocks so as to allow acquiring data in real time, accurate and high speed so as to contribute fairly high for the provision of data and information of fishery resources. Split beam echo sounder comprises two aspects, and a transducer. The first aspect is the high-resolution color display for displaying echogram at some observations and also serves as a controller in the operation of the echo sounder. The second aspect is transceiver consisting of transmitter and receiver. The Echosounder divided beam first inserted into the ES 3800 by SIMRAD beginning of the 1980s and in 1985 was introduced to fishermen in Japan as a tool for catching up. Split beam transducer is divided into four quadrants. Factors that contribute affect the value of Target Strength (TS) fish Strength target can generally be influenced by three factors: a target factor itself, environmental factors, and factors acoustic instrument. Factors include the size of the target, the anatomy of fish, swim bladder, the behavior of orientation.

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Pendugaan Biomassa Ikan Pelagis Di Perairan Teluk Tomini Dengan Metode Akustik Bim Terbagi

Cited by 10 publications

References 0 publications

Acoustic Systems (Split Beam Echo Sounder) to Determine Abundance of Fish in Marine Fisheries

Acoustic Systems (Split Beam Echo Sounder) to Determine Abundance of Fish in Marine Fisheries

Fish stock estimation in Sikka Regency Waters, Indonesia using Single Beam Echosounder (CruzPro fish finder PcFF-80) with hydroacoustic survey method

Acoustic systems (split beam echo sounder ) to determine abundance of fish in marine fisheries

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